The Racer X Fabrication sway bar links for the Subaru WRX / STI improve rigidity and fit and are perfect for racing and daily driving. Will work with the OEM or aftermarket strut bar. The adjustable sway bar end links are machined from 6061-T6 aluminum and come with aluminum spacers to fit into the control arm which attach to a spherical rod end. The quality spherical rod ends used on the bottom provide for longevity and a rattle free ride. The top uses a ball joint that is designed to correctly align into the sway bar.